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MariettaO [177]
3 years ago
15

The sum of the digits of a two-digit number is 13. Twice the first digit is 1 less than the second digit. What is the two digit

number. Create a system of equations and solve.
Mathematics
1 answer:
Alex3 years ago
4 0

Answer:

6 and 7

Step-by-step explanation:

10(13-X) + X= 13-9X. 3×2=6. 7-6=1. 7+6=13

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Can you please multiply this<br> (–2.3)(6.5)
liubo4ka [24]
Hello There!

-2.3 x 6.5 = -14.95.

The answer is -14.95.

Hope This Helps You!
Good Luck :) 

- Hannah ❤
3 0
3 years ago
Read 2 more answers
Un bosque de 2 km2 está formado por hayas y pinos. Las hayas ocupan 380.000 m2 ¿Cuántos metros cuadrados ocupan los pinos?
Ivanshal [37]

Answer:

Los pinos ocupan \\ 1620000m^{2} o <em>1 millón seiscientos veinte mil metros cuadrados</em>.

Step-by-step explanation:

Una manera de resolver este problema es la siguiente:

\\ 1km^{2} = 1km * 1km = 1000m * 1000m = 1000000m^{2}

\\ 2km^{2} = 2km * 1km = 2000m * 1000m = 2000000m^{2} = 2 * 10^{6}m^{2}

En palabras, \\ 2km^{2} = 2000000m^{2}, o <em>dos kilómetros cuadrados</em> son iguales a <em>2 millones de metros cuadrados</em>.

Sabemos que:

  1. Estos \\ 2km^{2} = 2000000m^{2} de bosque lo ocupan hayas y pinos, y, adicionalmente,
  2. Las hayas ocupan \\ 380000m^{2}.

De esta manera, <em>la parte que ocupan los pinos es el total del bosque menos el área ocupada por las hayas</em>. Por lo tanto, el área ocupada por los pinos es:

\\ 2000000m^{2} - 380000m^{2}

\\ 1620000m^{2}

¿Cuántos metros cuadrados ocupan los pinos?

Los pinos ocupan, entonces, \\ 1620000m^{2} o <em>1 millón seiscientos veinte mil metros cuadrados</em>.

8 0
3 years ago
Write a numerical expression for the volume
lions [1.4K]
(L*W)*H

hope it helps
8 0
3 years ago
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The volume of a sphere is two-thirds of a cylinder. What is the volume of a cylinder that has the same diameter as a sphere with
sattari [20]

Answer:

V_2= \frac{28}{3} u^3

Step-by-step explanation:

Given

Represent the volume of the cylinder with V1 and the volume of the sphere with V2

So, from the first statement: we have:

V_2 =\frac{2}{3}V_1

and

V_1 = 14u^3

To solve for V_2, we simply substitute 14u^3 for V_1 in V_2 =\frac{2}{3}V_1

V_2 =\frac{2}{3}V_1

V_2= \frac{2}{3} * 14u^3

V_2= \frac{2* 14}{3} u^3

V_2= \frac{28}{3} u^3

Hence, the volume of the sphere is \frac{28}{3} u^3

5 0
2 years ago
What is 2 9/10 as a decimal.
ziro4ka [17]
2.9 or 2.90
2 is a whole number
9/10 is a fraction so you divide. so 9 because it is like 90/100. Basically it is a decimal and then a 9 :)
3 0
3 years ago
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